package cn.itcast.nio.c4;

import lombok.extern.slf4j.Slf4j;

import java.io.IOException;
import java.net.InetSocketAddress;
import java.nio.ByteBuffer;
import java.nio.channels.ServerSocketChannel;
import java.nio.channels.SocketChannel;
import java.util.ArrayList;

import static cn.itcast.nio.c1.ByteBufferUtil.debugRead;

/**
 * 阻塞模式服务器
 */
@Slf4j
public class Server {
    public static void main(String[] args) throws IOException {
        //0.ByteBuffer
        ByteBuffer buffer = ByteBuffer.allocate(16);
        //1.创建了服务器
        ServerSocketChannel ssc = ServerSocketChannel.open();
        //2.绑定监听端口
        ssc.bind(new InetSocketAddress(8080));
        //3.连接集合
        ArrayList<SocketChannel> channels = new ArrayList<>();
        //4.accept
        while (true){
            //建立于客户端连接,SocketChannel用来与客户端通信
            log.debug("connecting...");
            SocketChannel sc = ssc.accept();//阻塞方法
            log.debug("connected...{}",sc);
            channels.add(sc);
            for(SocketChannel channel:channels){
                //接受客户端的数据
                log.debug("beforeRead...{}",channel);

                channel.read(buffer);//阻塞方法
                buffer.flip();
                debugRead(buffer);
                buffer.clear();
                log.debug("afterRead...");
            }
        }
    }
}
